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JEE · NEET Previous Year Question

$Sodium metal crystallizes in bock lattice with edge length of 4.29Å . The radius of sodium atom is$

Topic: JEE PYQ

Answer: B. Full step-by-step solution below.

A $1.601Å$
B $1.857 A$
C $2.857Å$
D $2.145Å$

Correct answer: B

Solution

(b) : a = 4.29Å For bcc, r = \frac{3}{4} a = \frac{3}{4} \times 4.29 = 1.857Å

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